Go 解析嵌套 json
写项目的时候,请求了一个接口,发现返回的json数据,多层嵌套的,而且嵌套的第二层data是数组,第三层的news也是数组
所以需要写多个嵌套json进行解析,使用json.Unmarshal 进行嵌套结构体的解析
json截图为:

代码实例:
package main
import (
"encoding/json"
"io/ioutil"
"net/http"
"net/url"
"fmt"
)
type HotNews struct {
Code int `json:"code"`
Status string `json:"status"`
Msg string `json:"msg"`
Data []Datas `json:"data"`
}
type Datas struct {
Symbol string `json:"symbol"`
Hot int `json:"hot"`
News []NewsInfo `json:"news"`
}
type NewsInfo struct {
Symbol string `json:"symbol"`
News_id string `json:"news_id"`
Hot string `json:"hot"`
Url string `json:"url"`
Title string `json:"title"`
Pv string `json:"pv"`
Pub_time string `json:"pub_time"`
Source string `json:"source"`
}
func getData(urlApi string) (body []byte,err error) {
apiUrl :=urlApi
u,err := url.ParseRequestURI(apiUrl)
if err !=nil{
fmt.Println("request url failed err:",err)
return nil,err
}
//u.RawQuery = data.Encode()
fmt.Println(u.String())
resp,err := http.Get(u.String())
if err !=nil{
fmt.Println("get url failed err :",err)
return nil,err
}
defer resp.Body.Close()
body,err = ioutil.ReadAll(resp.Body)
if err !=nil{
fmt.Println("read body failed err :",err)
return nil,err
}
return body,nil
}
func main() {
var hn HotNews
urlApi := "https://xxx/hot"
body,err := getData(urlApi)
if err !=nil{
fmt.Println("get data failed err:",err)
return
}
err = json.Unmarshal(body,&hn)
if err !=nil{
fmt.Println("unmarshal failed err:",err)
return
}
fmt.Println(hn.Code)
fmt.Println(hn.Data)
for _,v:= range hn.Data{
for _,n := range v.News{
fmt.Println(n.Source)
}
}
}

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